Arrogant Wurm

Discard it to a Wild Mongrel or Aquamoeba and you have skipped the green tax entirely: a 4/4 trampler for the moment you pitch it, on someone else's turn if you like. That is the design statement behind madness, and this is the wurm built to make the conversion sting most. Hardcast at five mana the body is fair, even dull. But madness reframes the whole cost as one you were paying anyway: every discard outlet in a graveyard-fueled green deck doubles as ramp into this, because the you pay off the discard trigger comes at instant speed and the written on the card never gets paid. Trample is the finishing touch that makes the cheated-out body matter, pushing past chump blockers in precisely the kind of green deck that stocks its yard early and wants a clock to cash the engine in. The friction is the discard itself: you need a way to pitch it, and the card is inert wherever you cannot reliably throw it away. Where that machinery exists, the rate is genuinely absurd for its era, and Arrogant Wurm became the standard-bearer for what madness was supposed to feel like when the mechanic actually clicked: a creature you got for free because you were already doing the thing that turned it on.